Why would a business want wrong looking pricing on their pricing page, "decoy"s aside? Seems that would deter people more. Makes the business seem like it doesn't have its stuff together. Would you trust a company that seems like it can't do simple math? I think the author may be getting at something here--perhaps adding a third, unrelated or irrelevant option drives more conversions, but nonsensical pricing doesn't seem like the way to do that.